ASTM D6307 provides detailed instructions on sample size based on nominal maximum aggregate size. For example, a mixture with a 25 mm (1 in.) NMAS requires a larger sample mass than a 9.5 mm (3/8 in.) mixture to ensure representativeness.
ASTM D6307 is the standard test method for determining the asphalt binder content of hot mix asphalt (HMA) by the ignition method.
Simply put, this test measures how much asphalt cement is in a paving mixture. A sample of asphalt mixture is heated in a furnace to burn off (ignite) the asphalt binder. By weighing the sample before and after ignition, technicians calculate the exact percentage of asphalt content.
The ASTM D6307 test method determines fill power using a specific apparatus and conditioning process. Here is a summary of the procedure:
Lists required equipment: ignition furnace, balance, sample containers, heat-resistant gloves, and drying ovens.
The significance of ASTM D6307 lies in its ability to offer a standardized approach to analyzing the purity of propylene concentrates. By quantifying hydrocarbon traces, manufacturers and quality control laboratories can verify that propylene samples meet the stringent purity requirements for polymerization processes. This not only helps in maintaining the quality of the end product but also in minimizing potential process disruptions caused by contaminants. astm d6307 pdf
Disclaimer: This article is for informational purposes only. Always refer to the official, current version of ASTM D6307 for actual testing procedures and compliance requirements. Prices and availability mentioned are estimates and subject to change.
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ASTM D6307 standard test method for determining the asphalt content of asphalt mixtures by the ignition method
The method involves placing a sample of the asphalt mixture in an ignition furnace to burn off the asphalt cement
. The difference in the mass of the sample before and after ignition is used to calculate the asphalt content. Core Content of the Standard The standard typically includes the following sections ASTM D6307 provides detailed instructions on sample size
: Covers the determination of asphalt content in asphalt mixtures or pavement samples using an ignition furnace. It notes that heating can be done via convection or direct irradiation. Referenced Documents : Lists other relevant standards like (Sampling Aggregates) and ASTM D2172 (Quantitative Extraction of Bitumen). Summary of Test Method
: The asphalt binder is oxidized (burned) at high temperatures ( 538 raised to the composed with power C 1000 raised to the composed with power F ), leaving behind the aggregate. Significance and Use
: Used for quality control and acceptance testing to ensure the mixture meets the specified asphalt content.
: Requires a specialized ignition furnace, internal balance (accurate to ), and safety equipment. Sampling and Preparation
: Instructions for obtaining and drying the test specimens to a constant mass before testing. Ready to get your official copy
: Step-by-step instructions for loading the sample, starting the ignition cycle, and weighing the final residue. Calculation
: Formulas to determine the asphalt binder content, including corrections for aggregate mass loss (calibration factor). Key Technical Details Standard Units : The standard uses SI units as the primary measurement Aggregate Recovery
: The aggregate left after the test can be used for sieve analysis, though some degradation in particle size may occur depending on the aggregate type Alternative Methods : While D6307 uses heat, ASTM D2172
is an alternative method that uses chemical solvents to extract the binder
Statistical data from interlaboratory studies, including repeatability (r) and reproducibility (R) limits.